Activities of the EMRAS tritium/C14 working group

被引:3
作者
Davis, PA [1 ]
Balonov, M
Venter, A
机构
[1] Atom Energy Canada Ltd, Chalk River Labs, Chalk River, ON K0J 1J0, Canada
[2] IAEA, Div Radiat Transport & Waste Safety, A-1400 Vienna, Austria
[3] Enviros Consulting Ltd, Manchester M50 3XW, Lancs, England
关键词
D O I
10.13182/FST05-A958
中图分类号
TL [原子能技术]; O571 [原子核物理学];
学科分类号
0827 ; 082701 ;
摘要
A new model evaluation program, Environmental Modeling for Radiation Safety (EMRAS), was initiated by the International Atomic Energy Agency in September 2003. EMRAS includes a working group (WG) on modeling tritium and C-14 transfer through the environment to biota and man. The main objective of this WG is to develop and test models of the uptake, formation and translocation of organically bound tritium (OBT) in food crops, animals and aquatic systems. To the extent possible, the WG is carrying out its work by comparing model predictions with experimental data to identify the modeling approaches and assumptions that lead to the best agreement between predictions and observations. Results for scenarios involving a chronically contaminated aquatic ecosystem and short-term exposure of soybeans are presently being analyzed. In addition, calculations for scenarios involving chronically contaminated terrestrial food chains and hypothetical short-term releases are currently underway, and a pine-tree scenario is being developed. The preparation of datasets on tritium dynamics in large animals and fish is being encouraged, since these are the areas of greatest uncertainty in OBT modeling. These activities will be discussed in this paper.
引用
收藏
页码:423 / 430
页数:8
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